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Finding the Fourth Proportional to 479,214.30, 718,821.45 and 146,790.30

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Solution

The fourth proportional to 479,214.30, 718,821.45 and 146,790.30 is: 220,185.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,214.30 : 718,821.45 = 146,790.30 : x
  2. Step 2: Convert to fraction form
    479,214.30/718,821.45 = 146,790.30/x
  3. Step 3: Cross multiply
    479,214.30x = 718,821.45 × 146,790.30
  4. Step 4: Simplify right side
    479,214.30x = 105,516,016,291.94
  5. Step 5: Solve for x
    x = 105,516,016,291.94/479,214.30
  6. Step 6: Final answer
    x = 220,185.45

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.